filename = 'pi_million_digits.txt'

with open(filename) as file_object:
    lines = file_object.readlines()

pi_string = ''
for line in lines:
    # pi_string += line.rstrip()
    pi_string += line.strip()

# print(pi_string)
# 打印后50位
print(pi_string[:52] + "...")
print(len(pi_string))